A two-photon tandem black phosphorus quantum dot-sensitized BiVO4 photoanode for solar water splitting
- Authors
- Jin, Bingjun; Cho, Yoonjun; Park, Cheolwoo; Jeong, Jeehun; Kim, Sungsoon; Jin, Jie; Kim, Wooyul; Wang, Luyang; Lu, Siyu; Zhang, Shengli; Oh, Sang Ho; Zhang, Kan; Park, Jong Hyeok
- Issue Date
- Feb-2022
- Publisher
- ROYAL SOC CHEMISTRY
- Citation
- ENERGY & ENVIRONMENTAL SCIENCE, v.15, no.2, pp 672 - 679
- Pages
- 8
- Journal Title
- ENERGY & ENVIRONMENTAL SCIENCE
- Volume
- 15
- Number
- 2
- Start Page
- 672
- End Page
- 679
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/152929
- DOI
- 10.1039/d1ee03014k
- ISSN
- 1754-5692
1754-5706
- Abstract
- The photoelectrochemical (PEC) water splitting efficiency is profoundly restricted by the limited light harvesting, rapid charge recombination, and sluggish water oxidation kinetics, in which the construction of a photoelectrode requires a strategic approach to overcome such intrinsic hurdles. Herein, we demonstrate novel black phosphorus quantum dots (BPQDs) with significant light absorbability up to the near-infrared region (NIR) to sensitize the etched BiVO4 photoanode (E-BiVO4) for a two-photon absorption tandem photoanode. A subsequent TiO2 overlayer (OL) significantly improves the stability of the E-BiVO4/BPQDs and eliminates the surface trap state to enhance charge separation. Finally, an oxygen evolution catalyst (OEC), NiOOH, loaded on E-BiVO4/BPQDs/OL further improves the water oxidation kinetics. The rationally designed E-BiVO4/BPQDs/OL-OEC with multiple components, each with definite functions, achieves a photocurrent density of 6.2 mA cm(-2) at 1.23 V vs. reversible hydrogen electrode (RHE) under AM 1.5 illumination, offering a high-end standard approach for achieving efficient solar-to-fuel conversion devices by combining a photosensitizer and passivation layer.
- Files in This Item
-
Go to Link
- Appears in
Collections - 공과대학 > 화공생명공학부 > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.